Steve Loughran created HADOOP-16384:
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             Summary: Improve resilience of S3Guard prune to inconsistent DDB 
tables
                 Key: HADOOP-16384
                 URL: https://issues.apache.org/jira/browse/HADOOP-16384
             Project: Hadoop Common
          Issue Type: Sub-task
          Components: fs/s3
    Affects Versions: 3.3.0
            Reporter: Steve Loughran
            Assignee: Steve Loughran


HADOOP-15183 added detection and rejection of prune updates when the store is 
inconsistent (i.e. when it tries to update an entry twice in the same 
operation, the second time with one that is inconsistent with the first)

Now that we can detect this, we should address it. We are lucky here in that my 
DDB table is currently inconsistent: prune is failing. 

Plan

# new test to run in the sequential phase, which does a s3guard prune against 
the bucket used in tests
# use this to identify/debug the issue
# replicate the problem in the ITestDDBMetastore tests
# decide what to do in this world. Tell the user to run fsck? skip?





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